Grade boundaries

Cambridge Cambridge O Level Science - Combined 5129 grade boundaries

The newest summer series is shown first. Type a mark to see its grade, or choose another tier, series or paper.

Level

Subject

Board

Course

Cambridge O Level Science - Combined 5129

Boundaries

Whole subject or paper

Mark

Out of

Type a mark to see its grade.

The boundaries

June 2026 · whole subject

Grade	Needs
A*	150 of 200
A	129 of 200
B	108 of 200
C	88 of 200
D	76 of 200
E	64 of 200

Every course·Mock grade calculator

Marks for each grade in June 2026

In total

150 out of 200 on Cambridge 5129 in total was a grade A* in June 2026.
129 out of 200 on Cambridge 5129 in total was a grade A in June 2026.
108 out of 200 on Cambridge 5129 in total was a grade B in June 2026.
88 out of 200 on Cambridge 5129 in total was a grade C in June 2026.
76 out of 200 on Cambridge 5129 in total was a grade D in June 2026.
64 out of 200 on Cambridge 5129 in total was a grade E in June 2026.

Every paper in June 2026

Every series

9 series, newest first. Each mark is the least that reaches the grade, out of the total under the column’s name.

June 2026

From Cambridge’s grade boundaries for June 2026: the board’s document.

Grade	Whole subjectout of 200	5129/12out of 40	5129/22out of 80	5129/32out of 40
A*	150	–	–	–
A	129	26	48	30
B	108	22	40	25
C	88	19	31	21
D	76	17	26	18
E	64	15	21	15

November 2025

From Cambridge’s grade boundaries for November 2025: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	154	154	–	–	–	–	–	–
A	129	129	27	29	51	48	25	25
B	104	104	23	25	40	37	20	20
C	79	79	19	22	28	25	15	15
D	67	67	17	19	24	21	12	12
E	55	55	15	17	19	16	9	9

June 2025

From Cambridge’s grade boundaries for June 2025: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	156	155	–	–	–	–	–	–
A	133	132	28	28	50	50	28	27
B	110	109	25	25	40	40	23	22
C	87	86	21	21	30	30	18	17
D	73	72	19	19	24	24	14	13
E	59	58	16	16	19	19	11	10

November 2024

From Cambridge’s grade boundaries for November 2024: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	150	152	–	–	–	–	–	–
A	127	131	27	29	48	48	26	27
B	104	110	23	26	38	38	22	23
C	82	89	19	23	28	28	18	19
D	70	76	16	21	24	24	16	15
E	58	63	14	17	20	20	12	12

June 2024

From Cambridge’s grade boundaries for June 2024: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	159	161	–	–	–	–	–	–
A	134	136	30	30	51	51	25	27
B	109	111	26	26	40	40	20	22
C	85	87	22	22	29	29	16	18
D	71	73	20	20	23	23	12	14
E	57	59	17	17	18	18	9	11

November 2023

From Cambridge’s grade boundaries for November 2023: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	151	149	–	–	–	–	–	–
A	129	127	28	28	47	47	28	26
B	107	105	25	25	37	37	24	22
C	85	84	20	20	28	28	20	19
D	70	69	18	18	22	22	16	15
E	55	54	15	15	16	16	12	11

June 2023

From Cambridge’s grade boundaries for June 2023: the board’s document.

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	157	160	–	–	–	–	–	–
A	135	137	26	26	54	54	28	30
B	113	114	23	23	44	44	23	24
C	91	92	20	20	34	34	18	19
D	77	76	17	17	29	28	15	15
E	63	61	15	14	23	23	12	11

November 2022

From Cambridge’s grade boundaries for November 2022: the board’s document.

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	114	113	–	–	–	–
A	100	98	31	29	69	69
B	86	83	27	25	59	58
C	72	69	23	21	49	48
D	60	57	19	18	41	39
E	48	45	16	15	32	30

June 2022

From Cambridge’s grade boundaries for June 2022: the board’s document.

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	110	102	–	–	–	–
A	96	89	28	26	68	63
B	82	76	25	23	57	53
C	69	63	23	21	46	42
D	56	51	19	18	37	33
E	44	40	16	15	28	25

Questions

What mark do you need for a grade A in Cambridge Cambridge O Level Science - Combined 5129?

In June 2026, the least mark for the whole subject that reached a grade A was 129 out of 200 in total.

What mark do you need for a grade C in Cambridge Cambridge O Level Science - Combined 5129?

In June 2026, the least mark for the whole subject that reached a grade C was 88 out of 200 in total.

Which series of Cambridge Cambridge O Level Science - Combined 5129 grade boundaries are there?

9 series, from June 2022 to June 2026: June 2026, November 2025, June 2025, November 2024, June 2024, November 2023, June 2023, November 2022 and June 2022.

Other Cambridge International GCSE courses

A series, or the safe rule

A paper is graded against the boundaries of the series it was sat in. Choose that series and the grade is the one the board’s boundaries gave that sitting. Where a series published more than one set of boundaries for the whole subject, one for each combination of papers, each grade takes the highest of them, and the line under the grade says so.

The safe rule is for a mark with no series of its own, such as a mock. For each grade it takes the highest boundary in the board’s most recent summer series, up to three of them and leaving out 2020 to 2022, or the course’s main series where it has no summer one. A grade it gives would have been enough in each of them. The line under the grade names the series it counted.

In the app you log a paper in one line, or question by question where asterisk has its questions, and each grade comes from these same boundaries. Open the app.

Not here

CCEA, AS level, IB and AP: the app holds no grade boundaries for them, so they are not offered.

Where these numbers come from

Boards publish their grade boundaries after each series, and that is all this page holds: each grade’s boundary mark and what the subject or paper is out of, as the board printed them. The papers stay on the boards’ own sites; nothing here reproduces a question or a mark scheme.

Grade	Whole subjectout of 200	5129/12out of 40	5129/22out of 80	5129/32out of 40
A*	150	–	–	–
A	129	26	48	30
B	108	22	40	25
C	88	19	31	21
D	76	17	26	18
E	64	15	21	15

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	154	154	–	–	–	–	–	–
A	129	129	27	29	51	48	25	25
B	104	104	23	25	40	37	20	20
C	79	79	19	22	28	25	15	15
D	67	67	17	19	24	21	12	12
E	55	55	15	17	19	16	9	9

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	156	155	–	–	–	–	–	–
A	133	132	28	28	50	50	28	27
B	110	109	25	25	40	40	23	22
C	87	86	21	21	30	30	18	17
D	73	72	19	19	24	24	14	13
E	59	58	16	16	19	19	11	10

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	150	152	–	–	–	–	–	–
A	127	131	27	29	48	48	26	27
B	104	110	23	26	38	38	22	23
C	82	89	19	23	28	28	18	19
D	70	76	16	21	24	24	16	15
E	58	63	14	17	20	20	12	12

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	159	161	–	–	–	–	–	–
A	134	136	30	30	51	51	25	27
B	109	111	26	26	40	40	20	22
C	85	87	22	22	29	29	16	18
D	71	73	20	20	23	23	12	14
E	57	59	17	17	18	18	9	11

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	151	149	–	–	–	–	–	–
A	129	127	28	28	47	47	28	26
B	107	105	25	25	37	37	24	22
C	85	84	20	20	28	28	20	19
D	70	69	18	18	22	22	16	15
E	55	54	15	15	16	16	12	11

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	157	160	–	–	–	–	–	–
A	135	137	26	26	54	54	28	30
B	113	114	23	23	44	44	23	24
C	91	92	20	20	34	34	18	19
D	77	76	17	17	29	28	15	15
E	63	61	15	14	23	23	12	11

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	114	113	–	–	–	–
A	100	98	31	29	69	69
B	86	83	27	25	59	58
C	72	69	23	21	49	48
D	60	57	19	18	41	39
E	48	45	16	15	32	30

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	110	102	–	–	–	–
A	96	89	28	26	68	63
B	82	76	25	23	57	53
C	69	63	23	21	46	42
D	56	51	19	18	37	33
E	44	40	16	15	28	25

Grade	Whole subjectout of 200	5129/12out of 40	5129/22out of 80	5129/32out of 40
A*	150	–	–	–
A	129	26	48	30
B	108	22	40	25
C	88	19	31	21
D	76	17	26	18
E	64	15	21	15

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	154	154	–	–	–	–	–	–
A	129	129	27	29	51	48	25	25
B	104	104	23	25	40	37	20	20
C	79	79	19	22	28	25	15	15
D	67	67	17	19	24	21	12	12
E	55	55	15	17	19	16	9	9

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	156	155	–	–	–	–	–	–
A	133	132	28	28	50	50	28	27
B	110	109	25	25	40	40	23	22
C	87	86	21	21	30	30	18	17
D	73	72	19	19	24	24	14	13
E	59	58	16	16	19	19	11	10

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	150	152	–	–	–	–	–	–
A	127	131	27	29	48	48	26	27
B	104	110	23	26	38	38	22	23
C	82	89	19	23	28	28	18	19
D	70	76	16	21	24	24	16	15
E	58	63	14	17	20	20	12	12

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	159	161	–	–	–	–	–	–
A	134	136	30	30	51	51	25	27
B	109	111	26	26	40	40	20	22
C	85	87	22	22	29	29	16	18
D	71	73	20	20	23	23	12	14
E	57	59	17	17	18	18	9	11

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	151	149	–	–	–	–	–	–
A	129	127	28	28	47	47	28	26
B	107	105	25	25	37	37	24	22
C	85	84	20	20	28	28	20	19
D	70	69	18	18	22	22	16	15
E	55	54	15	15	16	16	12	11

Grade	Whole subject (11, 21, 31)out of 200	Whole subject (12, 22, 32)out of 200	5129/11out of 40	5129/12out of 40	5129/21out of 80	5129/22out of 80	5129/31out of 40	5129/32out of 40
A*	157	160	–	–	–	–	–	–
A	135	137	26	26	54	54	28	30
B	113	114	23	23	44	44	23	24
C	91	92	20	20	34	34	18	19
D	77	76	17	17	29	28	15	15
E	63	61	15	14	23	23	12	11

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	114	113	–	–	–	–
A	100	98	31	29	69	69
B	86	83	27	25	59	58
C	72	69	23	21	49	48
D	60	57	19	18	41	39
E	48	45	16	15	32	30

Grade	Whole subject (11, 21)out of 140	Whole subject (12, 22)out of 140	5129/11out of 40	5129/12out of 40	5129/21out of 100	5129/22out of 100
A*	110	102	–	–	–	–
A	96	89	28	26	68	63
B	82	76	25	23	57	53
C	69	63	23	21	46	42
D	56	51	19	18	37	33
E	44	40	16	15	28	25